Punch; Types Of Punch Unit; Drive; Home Position - Gestetner B147 Service Manual

3.8.2 PUNCH

Types of Punch Unit

There are four types:
• 2 holes
• 2 or 3 holes (The user can select 2-hole punching or 3-hole punching from
the operation panel or the printer driver.)
• 4 holes
• 4 holes
There are two 4-hole types: for the North Europe models and for the other models.

Drive

[B]
The diagram shows the 2 or 3 holes type, which has five punch cams [B]: two of
them are for 2-hole punching and the other three are for 3-hole punching. The
punch motor [A] drives the punch cams.

Home Position

The controller uses two sensors, the home position sensor [D] and the encoder
sensor [C], to set the punch cams in the home position. The controller fine-adjusts
the home position by referencing the encoder sensor signals.
SM
[A]
67
PUNCH UNIT (OPTIONAL)
[C]
[D]
B602D942.WMF
B602